Thaddeus is a distinctive boys' name in United States, ranking #918 in 2005 with 192 recorded births. The name reached its all-time peak in 2016 with 416 births ranking #640. Since 1996, the popularity has decreased by 11.1%. In 2005, approximately 1 in every 10,402 boys born was named Thaddeus. RISING Recent data shows the name is currently rising.